Internal-combustion engines – Starting device – For airplane
Patent
1999-05-24
2000-09-12
Dolinar, Andrew M.
Internal-combustion engines
Starting device
For airplane
307 103, 307 106, B60R 2504, F02N 1108
Patent
active
061162019
ABSTRACT:
A vehicle antitheft system includes a MOSFET with associated power and logic circuitry embodied by a chip that can be housed within a starter solenoid housing for preventing control current from activating the solenoid unless an authorized enable signal is received. The enable signal can be transmitted by a hand-held rf transmitter. The chip can also undertake additional functions. In alternate embodiments, the MOSFET can be disposed in a housing separate from the solenoid and mounted near the solenoid, and the MOSFET can be controlled by an rf-generated enable signal or by an impulse-generated enable signal. In the latter case, the MOSFET is activated to close the solenoid control current circuit path only when a single impulse signal, e.g., from a door latch lock, is activated. If two impulse signals are received, one from, e.g., the door latch lock and another from, e.g., a locking mechanism/switch inside the vehicle, the MOSFET is not activated, to prevent a thief from actuating the system by breaking into the vehicle and unlocking the vehicle door from inside the vehicle.
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Dolinar Andrew M.
Labken Inc.
Rogitz John L.
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